This inventor holds 2 USPTO granted patents. Top assignees: Hitachi Building Equipment Engineering Co., Ltd., Hitachi, Ltd.. Active years: 1981-1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 2 
1 out of 42,740 
Years Active: 1981-1996
Title: The Innovative Contributions of Susumu Ishii
Introduction
Susumu Ishii is a notable inventor based in Tsuchiura, Japan. He has made significant contributions to the field of refrigeration and fluid pressure systems. With a total of 2 patents, his work reflects a commitment to improving technology and efficiency in these areas.
Latest Patents
One of Ishii's latest patents is a refrigeration purge and/or recovery apparatus. This invention presents an improved method for recovering refrigerants from refrigerators. The apparatus is designed to discharge nearly all refrigerant gas from the refrigerator while purging non-condensable gases with minimal refrigerant loss. It incorporates a vacuum pump and a compressor connected in series, allowing for efficient operation and reduced environmental impact. Another significant patent is an apparatus for controlling the operation of a fluid pressure raising system. This system features an overdrive gear that allows for variable power transmission from a motor to a centrifugal fluid machine. The design includes a clutch that responds to external conditions, enhancing the adaptability and efficiency of the system.
Career Highlights
Throughout his career, Ishii has worked with prominent companies such as Hitachi Building Equipment Engineering Co., Ltd. and Hitachi, Ltd. His experience in these organizations has contributed to his expertise in developing innovative solutions in engineering and technology.
Collaborations
Ishii has collaborated with notable colleagues, including Keiji Tachibana and Michio Kumaki. These partnerships have likely fostered a creative environment that encourages the exchange of ideas and advancements in their respective fields.
Conclusion
Susumu Ishii's contributions to the fields of refrigeration and fluid pressure systems demonstrate his innovative spirit and dedication to technological advancement. His patents reflect a deep understanding of engineering principles and a commitment to improving efficiency and sustainability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile